Bake Simple Deform animation into mesh for Unity3D export?
There's not much ways to do that… Only one I can think of is applying enough 'keyframes' of your deform animation as shapekeys (you can copy modifier, apply as shapekey the copy, go five frames later, copy, apply as shapekey the copy, etc.), and then in Unity (or Blender), create an animation interpolating between those shapekeys. But this will be rather painful to set up I’m afraid.